.App{
    width: 100%;
    text-align: center;
}

.container{
    width: 600px;
    height: 600px;
    border: 1px solid black;
    margin: auto;
    margin-top: 100px;
    text-align: center;
}
.board-row{
    width: 600px;
    height: 200px;
}
.board-row button{
    vertical-align: top;
    width: 200px;
    height: 200px;
    border: 1px solid black;
    background-color: #fff;
    font-size: 40px;
    font-weight: bold;
}

.square.highlight{
    background-color: rgb(99, 5, 5);
}
